Overview Report on the M3 and M4 mini engineering
runs
M3 @ Hanford Sept 13, 2003 --> M3
Web Page
M4 @ Livingston Sept 20, 2003 --> M4
Web Page
[6-hour runs: 6:00 p.m - 12:00 am. PDT]
Operations:
-
H1 behaved reasonably well, giving inspiral ranges > 1 Mpc.
Calibration performed and used by SenseMon.
-
H2 cooperated more than expected, entering common mode.
-
L1 did not cooperate well, but we "fooled" the DMT monitors
into thinking it had reached science mode
DMT Monitors:
-
Core monitors (SenseMon, LockLoss, LineMon, DataQual, TimeMon,
etc.) functioned sensibly in both runs
(But note that SenseMon does not yet have correction for dynamic input
matrix element, and we had no up-to-date L1 calibration functions to feed
to it during M4)
-
Figures of merit plots resurrected (updated at LHO, merely
renamed at LLO because of high noise conditions)
-
New or significantly upgraded DMT monitors exercised by teams
of volunteers (LHO,
LLO),
including DMT authors looking at other monitors
-
Reports on monitors entered into Elog (M3
and M4)
(responses from authors later in this meeting)
Summary:
-
On the whole, the mini-runs proved useful both in forcing
us to revive DMT monitors that had fallen into disrepair and in letting
us exercise the old monitors and test the new ones. Ran into the usual
problem of having unstable IFO's in a run held in the midst of commissioning.
-
Core monitors in reasonably good shape
-
Most new monitors need significant work to be ready for prime
time
-
Need to make good use of post-freeze interim before E10 to
finish shaking down the programs
-
Many thanks to site staff for hosting the runs, getting the
IFO's into running states, and helping test monitors. Thanks too to the
DMT authors who travelled to the sites and placed themselves on call
(M3,
M4).